News | Download | Order/Buy | Barcode encyclopedia | Contact |
PSOFT barcode homepage
Barcode solutions for Delphi™, C++Builder™
Applications for Windows™, DLL
ActiveX for Microsoft Office™
Nov 27 2016

Christmas Discount for all Barcode studio versions. Prices are common, but until 31 January 2017 pay them 40% discount

After this date revert to previous prices (prices in Order page are original, but when you register you get a discount.)

Note : In February 2017 we plan publish new version of Barcode studio 2017. Registered users get free.


Our second homepage




Are you developer? Can be inform about news, updates? Can you try new versions before official presentation? Not a member yet? Please join us.

EMail:
Are you developer? Can be inform about news, updates? Can you try new versions before official presentation? Not a member yet? Please join us.

EMail:






 Eval library - Set of Delphi components for runtime evaluation - math parser. Nice end user visual interface, formula, expression design like MS Excel formulas. About 200 functions supported ( numeric, string, boolean, date, file name, financial, statistics). Parameters enabled, multiexpression component-evaluate more expressions once.<br>

Content.

All products(3) Barcode studio(2) Eval library.
(4) Barcode library.


Eval library.

1. What is Eval library ?
Eval library is set of components for runtime evaluation of string. For example you can use this library for creation some calculators etc. In your program code you can have for example variable s:string, and fill this variable using some user interface window. Than set property Expression with some string, and result value is in property Value;
For example s:='2*3+5'; Eval.Expression:=s; and reading property Value gets 11.
2. How many functions supports Eval library ?
Eval library supports:
  • basic functions (+,-,*,/) :25
  • string functions :40
  • date functions : 24
  • file functions: 18
  • numeric : 30
  • goniometric : 23
  • conversion : 21
  • misc. : 5
  • financial :11
For details please look Eval library or function list here.